US11938438B2 - Method and device for filtering contaminated air - Google Patents

Method and device for filtering contaminated air Download PDF

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Publication number
US11938438B2
US11938438B2 US17/282,151 US201917282151A US11938438B2 US 11938438 B2 US11938438 B2 US 11938438B2 US 201917282151 A US201917282151 A US 201917282151A US 11938438 B2 US11938438 B2 US 11938438B2
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Prior art keywords
filter
air
chamber
filter element
chambers
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US20210354068A1 (en
Inventor
Stephan Rickerts
Ernst Claussen
Hauke Petersen
Frank Knödler
Sonja Dittscher
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Oerlikon Textile GmbH and Co KG
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Oerlikon Textile GmbH and Co KG
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Assigned to OERLIKON TEXTILE GMBH & CO. KG reassignment OERLIKON TEXTILE GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CLAUSSEN, ERNST, RICKERTS, STEPHAN, KNÖDLER, Frank, DITTSCHER, SONJA, PETERSEN, Hauke
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/88—Replacing filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0091—Including arrangements for environmental or personal protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/90—Devices for taking out of action one or more units of multi-unit filters, e.g. for regeneration or maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/28—Making use of vacuum or underpressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/30—Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan

Definitions

  • the invention relates to a method for filtering contaminated air as disclosed herein, as well as to a device for filtering contaminated air as disclosed herein.
  • the medium of air is used in many diverse ways for treating fibers and threads in production plants for fibers or threads.
  • conditioned air is used for cooling freshly extruded filaments or for cooling treated strands of fibers, for example.
  • Applications in which the air is used for entangling or texturing multifilament threads are likewise known.
  • filter devices are disposed in an intake flow of the air, wherein one or a plurality of filter elements are passed through for filtering and cleaning the air.
  • the service life of filter elements of this type is limited, depending on the degree of contamination of the air.
  • various types of filter devices for increasing the service life of filter elements are known in the prior art.
  • a filter installation having a filter element which is configured as a drum filter is disposed in an air duct system.
  • a movable suction nozzle for relieving the surface of suspended particles adhering to the latter is assigned to the drum filter.
  • Filter elements of this type which are cleaned during operation have the advantage that the production process can continue without interruptions.
  • filter devices of this type reach their limits when fine filter elements are to be cleaned during operation.
  • a second genre of filter devices which is disclosed for example in DE 91 01 692 U1, have a filter installation having a replaceable filter element in an air duct system.
  • the filter element is completely retrieved from the filter installation and supplied to a cleaning process.
  • the disadvantage of filter devices of this type lies in that the production process typically has to be interrupted in order for the filter elements to be changed.
  • This object in terms of the method is achieved according to the invention in that a plurality of filter elements are kept available in the filter receptacle installation in such a manner that a self-acting replacement of the contaminated filter element in the air duct system takes place when one of the filter elements is retrieved.
  • the solution lies in that the filter receptacle installation for receiving a plurality of filter elements has a plurality of filter chambers which are mutually disposed in such a manner that the filter element when being replaced is able to be guided in a sliding manner from one of the filter chambers into another filter chamber.
  • the invention is distinguished in that a replacement of the filter element can be carried out without interrupting the process.
  • the contaminated air can be continuously suctioned and filtered through the filter element.
  • the degree of contamination of the filter element can be identified as a function of a pressure differential that is usually measured in such systems, such that a self-acting replacement of the contaminated filter element takes place in the air duct system when one of the filter elements is retrieved. It is guaranteed on account thereof that the contaminated air is continuously suctioned through one of the filter elements without any substantial interruption.
  • the method variant in which the filter elements are held in filter chambers that are disposed on top of one another and, when replacing the contaminated filter element, are connected to one another so as to form a gravity chute is particularly advantageous.
  • the maximum gravity acting on the filter elements can thus be advantageously utilized for accelerating the replacement.
  • the method variant in which a vacuum for assisting the replacement of the filter elements is generated in a lower one of the filter chambers has proven particularly successful.
  • a suction effect which conveys the filter element situated in the air duct system into the lower filter chamber is thus generated within the filter chambers that are combined so as to form a gravity chute.
  • a filter element getting stuck in the air duct system by virtue of a high negative pressure can thus be avoided.
  • the contaminated filter element that has plunged into the lower filter chamber also continues to assist the filtration of the contaminated air in that, on account thereof, the substituted filter element is held in the operating position thereof.
  • the method variant in which a new filter element is kept available in a plug-in chamber, and wherein the plug-in chamber for replacing the spent filter element is connected to the upper filter chamber is preferably embodied.
  • the new substituted filter element can thus be introduced into the upper filter chamber from a closed plug-in chamber. Suctioning of external air is avoided on account thereof.
  • the device according to the invention for filtering contaminated air possesses the particular advantage that continuous filtration is possible without an interruption of the process, on the one hand, and the filter elements can be intensively cleaned, on the other hand.
  • a new filter element can thus be introduced in a simple manner into the air duct system on account of gravity, wherein the spent filter element plunges into a lower filter chamber.
  • a height differential in the filter receptacle installation is thus utilized in order for a rapid replacement of the filter elements in the filter receptacle installation to be performed.
  • the refinement of the device according to the invention in which the filter chambers of the filter receptacle installation form a gravity chute in which the filter elements are held on top of one another is particularly effective. This allows maximum gravity to be used to exchange the filter elements.
  • the filter element between the air inlet and the air outlet is held in an upper one of the filter chambers which is configured so as to be air-permeable between the air inlet and the air outlet and has an upper filter opening for a new filter element to drop in.
  • the filter element during operation thus has a defined position within the air duct system.
  • the filter opening of the upper filter chamber is closed by a sliding lid which is configured so as to be movable for opening and closing the upper filter chamber.
  • the sliding lid herein can be guided in a manual or automated manner.
  • the air duct system is thus sealed in relation to the environment.
  • the lower filter chamber In order for the filter receptacle installation to be closed also toward the bottom, the lower filter chamber has closed chamber walls and a lateral retrieval opening having a closable cover. The cover of the lower filter chamber is opened only when required in order for one of the contaminated filter elements to be retrieved.
  • the refinement of the invention in which the filter receptacle installation above the upper filter chamber has a plug-in chamber having a closable plug-in opening is preferably embodied, wherein the plug-in chamber is able to be connected to the upper filter chamber.
  • the new filter element can thus be introduced into the air duct system from a closed plug-in chamber. Any intake of external air is avoided, and the negative pressure relevant to the operation can also be maintained during the replacement phase of the filter element.
  • the filter elements are preferably formed by a filter cartridge which has at least one filter material in a frame.
  • woven fabrics, wires, or non-woven materials can be used as a filter material herein.
  • the refinement of the device according to the invention in which a plurality of filter receptacle installations by way of which a plurality of filter elements having different filter materials are held between the air inlet and the air outlet are provided beside one another in parallel on the air duct system is particularly advantageous in order for the service life to be increased until the filter elements are replaced. This allows coarse and fine filter materials to be arranged in different filter elements within the air duct system.
  • the device according to the invention for filtering contaminated air is particularly effective in those cases in which the air outlet opening of the air duct system is connected to a suction connector of a negative-pressure source, in particular to a fan. In principle however, there is also the possibility of disposing the device according to the invention for filtering contaminated air in a pressurized system.
  • a suction device according to the invention for suctioning contaminated air having a fan and having a filter device which corresponds to the device according to the invention for filtration, can thus be particularly advantageously used in plants producing fibers and threads, for example.
  • the suction device according to the invention guarantees a continuous uninterrupted operation of the production plant
  • FIG. 1 schematically shows a lateral view of a first exemplary embodiment of the device according to the invention for filtering contaminated air
  • FIG. 2 schematically shows a cross-sectional view of the exemplary embodiment from FIG. 1 ;
  • FIG. 3 schematically shows a front view of the exemplary embodiment from FIG. 1 ;
  • FIG. 4 schematically shows a lateral view of a further exemplary embodiment of the device according to the invention for filtering contaminated air
  • FIG. 5 schematically shows a front view of the exemplary embodiment from FIG. 4 ;
  • FIG. 6 schematically shows a lateral view of a further exemplary embodiment of the device according to the invention for filtering contaminated air.
  • FIGS. 1 , 2 , and 3 A first exemplary embodiment of the device according to the invention for filtering contaminated air is schematically illustrated in a plurality of views in FIGS. 1 , 2 , and 3 .
  • the exemplary embodiment is illustrated in a lateral view in FIG. 1 , in a cross-sectional view in FIG. 2 , and in a front view in FIG. 3 .
  • the description hereunder applies to all figures.
  • the exemplary embodiment of the device according to the invention for filtering contaminated air has an air duct system 1 .
  • the air duct system 1 is composed of an inlet port 1 . 1 and an outlet port 1 . 2 which therebetween enclose a filter receptacle installation 6 .
  • the inlet port 1 . 1 forms an air inlet 2 .
  • the outlet port 1 . 2 opposite the filter receptacle installation 6 , forms an air outlet 3 .
  • the filter receptacle installation 6 in this exemplary embodiment has an upper filter chamber 7 which is integrated between the inlet port 1 . 1 and the outlet port 1 . 2 .
  • the upper filter chamber 7 is embodied so as to be air-permeable and has only lateral chamber walls for receiving a filter element 4 .
  • a filter opening 8 which extends across the cross section of the filter chamber 7 is configured on an upper side of the upper filter chamber 7 .
  • the filter opening 8 is closed by a sliding lid 11 .
  • the sliding lid 11 can be displaced for opening and closing the filter opening 8 .
  • the sliding lid in this exemplary embodiment at a free end has a handle 11 . 1 such that an operator can activate the sliding lid 11 .
  • the displacement of the sliding lid 11 could also be carried out by a linear drive.
  • a holding tray 18 into which a filter element can be plugged is disposed above the sliding lid 11 .
  • the upper filter chamber 7 of the filter receptacle installation 6 extends substantially across the cross sections of the inlet port 1 . 1 and of the outlet port 1 . 2 .
  • a passage opening 13 which extends across the cross section of the upper filter chamber 7 is configured on a lower side of the upper filter chamber 7 .
  • the passage opening 13 connect the upper filter chamber 7 with a lower filter chamber 9 .
  • the lower filter chamber 9 below the air duct system 1 extends in such a manner that the lower filter chamber 9 can comprise a filter element 4 .
  • the lower filter chamber 9 is formed by closed chamber walls 14 and has a lateral retrieval opening 10 .
  • the retrieval opening 10 is closed by a cover 12 .
  • the cover 12 can be manually displaced for opening the retrieval opening 10 . To this end, the cover 12 has a handle 12 . 1 . However, the activation of the cover 12 could also be carried out by an actuator.
  • the upper filter chamber 7 and the lower filter chamber 9 within the filter receptacle installation form a continuous gravity chute 19 in which the filter elements 4 are held so as to be disposed on top of one another, wherein the lower filter element supports the upper filter element.
  • the filter elements 4 are in each case formed by one filter cartridge 17 .
  • the filter cartridge 17 has a cuboid frame 20 in which a filter element 21 is held.
  • the filter material 21 herein can be formed by a wire mesh, a woven fabric, or a non-woven material. The corresponding filter material is chosen depending on the requirements in terms of cleaning the air.
  • FIG. 1 illustrates a suction installation of this type, wherein the negative-pressure source is identified by the reference sign 5 and illustrated only in a symbolic manner.
  • a negative pressure is generated at the air inlet 1 so as to be able to receive and filter air from a production plant.
  • the filter cartridge 17 . 1 is for example held in the upper filter chamber 7 , between the air inlet 2 and the air outlet 3 .
  • the contaminated air suctioned by way of the air inlet 2 is guided through the filter material of the filter cartridge 17 . 1 , and the suspended particles are filtered from the air.
  • This procedure is repeated until an impermissible contamination of the filter cartridge 7 . 1 in the upper filter chamber 7 is established.
  • the filter cartridge 17 . 2 which has been held since the last replacement, is disposed in the lower filter chamber 9 and supports the filter cartridge 17 . 1 in the upper filter chamber 7 .
  • a replacement of the filter cartridge 17 . 1 is initiated.
  • a new filter cartridge 17 . 1 is plugged into the holding tray 18 above the filter opening 8 .
  • the filter opening 8 and the retrieval opening 10 are still closed in the situation.
  • the sliding lid 11 is now activated by an operator so as to open the filter opening 8 of the upper filter chamber 7 .
  • the filter cartridge 17 . 3 is now supported on an upper side of the filter cartridge 17 . 1 .
  • the retrieval opening 10 is opened by activating the cover 12 .
  • the operator using an auxiliary tool which is molded on the cover 12 , for example, now grips the filter cartridge 17 .
  • the filter cartridges 17 . 1 and 17 . 3 overcome the negative pressure acting on the filter cartridge 17 . 1 by gravity, the filter cartridges 17 . 1 and 17 . 3 in the manner of a gravity chute slide downward such that the filter cartridge 17 . 1 is held in the lower filter chamber 9 and the filter cartridge 17 . 3 is held in the upper filter chamber 7 .
  • the filter cartridge 17 . 2 retrieved from the filter receptacle installation 6 is then supplied to a cleaning process, in order to be reintroduced at a next changeover.
  • FIGS. 4 and 5 a further exemplary embodiment of the device according to the invention for filtering contaminated air is illustrated in FIGS. 4 and 5 .
  • a lateral view is shown in FIG. 4
  • a front view is shown in FIG. 5 .
  • FIGS. 4 and 5 The exemplary embodiment of the device according to the invention illustrated in FIGS. 4 and 5 is substantially identical to the exemplary embodiment as per FIGS. 1 to 3 such that only the points of differentiation will be explained at this juncture and reference otherwise is made to the afore-mentioned description in order to avoid repetitions.
  • the filter receptacle installation 6 is embodied with an upper plug-in chamber 15 .
  • the upper plug-in chamber 15 has a plug-in opening 16 which by way of a covering 22 is embodied so as to be closable.
  • the plug-in chamber 15 is formed by closed chamber walls 14 and by way of a filter opening 8 embodied so as to be permeable in relation to the lower side.
  • the cover 22 is likewise embodied with a handle 22 . 1 so as to enable a manual operation.
  • the plug-in chamber 15 in the cross section extends across an upper filter chamber 7 and a lower filter chamber 9 which conjointly are able to be connected so as to form a gravity chute 19 .
  • the lower filter chamber 9 and the upper filter chamber 7 of the filter receptacle installation 6 are embodied so as to be identical to the exemplary embodiment as per FIGS. 1 to 3 . To this extent, reference is made to the afore-mentioned description.
  • a sliding lid 11 which closes the filter opening 8 between the plug-in chamber 15 and the upper filter chamber 7 is disposed between the plug-in chamber 15 and the upper filter chamber 7 .
  • the sliding lid 11 for opening the filter opening 8 can be activated only once the cover 22 has closed the plug-in opening 16 of the plug-in chamber 15 .
  • a new filter element is thus kept available in the plug-in chamber 15 so as to start the procedure already described above in a next replacement of the filter elements.
  • the stocking of the plug-in chamber 15 with a new filter element is independent of the respective changeover procedure such that the contaminated filter cartridge which becomes available in the replacement could thus, after cleaning, be advantageously returned directly into the plug-in chamber.
  • the replacement of the filter cartridges takes place with a closed plug-in chamber 15 such that a closed system is prevalent after the filter opening 8 has been opened. The operating pressure level is substantially maintained even when the filter opening 8 is opened.
  • FIGS. 4 and 5 The functional mode of the exemplary embodiment of the device according to the invention for filtering contaminated air illustrated in FIGS. 4 and 5 is identical to the exemplary embodiment as per FIGS. 1 to 3 such that reference is made to the aforementioned description at this juncture.
  • FIGS. 1 to 4 are based on filtering of the air taking place by a filter element. Depending on the specific application, this can however also be advantageous when pre-filtering of coarse component parts takes place so as to collect coarse suspended particles in a preliminary filter, for example.
  • a further exemplary embodiment of the device according to the invention for filtering contaminated air is schematically illustrated in a lateral view in FIG. 6 .
  • a plurality of filter receptacle installations 6 . 1 and 6 . 2 are held beside one another in parallel in an air duct system 1 in the exemplary embodiment shown.
  • the filter receptacle installations 6 . 1 and 6 are based on filtering of the air taking place by a filter element.
  • this can however also be advantageous when pre-filtering of coarse component parts takes place so as to collect coarse suspended particles in a preliminary filter, for example.
  • FIG. 6 a further exemplary embodiment of the device according to the invention for filtering contaminated air is schematically illustrated in a lateral view in FIG. 6 .
  • Each of the filter receptacle installations 6 . 1 and 6 . 2 thus has a plug-in chamber 15 , an upper filter chamber 7 , and a lower filter chambers 9 which are able to be connected so as to form a gravity chute.
  • Each of the filter receptacle installations 6 contains at least two filter cartridges which are situated in the upper filter chamber 7 and in the lower filter chamber 9 .
  • the filter cartridges of the filter receptacle installation 6 are identical to the exemplary embodiment as per FIGS. 4 and 5 .
  • the filter receptacle installation 6 . 2 has filter cartridges which have a filter material with a fine mesh.
  • Each of the filter receptacle installations 6 . 1 and 6 . 2 can be operated independently of the other.
  • the method according to the invention and the device according to the invention for filtering contaminated air is suitable for filtering a flow of extracted air in any industrial application.
  • the application in the production processes of fibers and threads is particularly advantageous because these processes are carried out in a substantially continuous manner over long operating periods.
  • the filter receptacle installation is disposed in a vertical manner so as to utilize the maximum possible gravity for replacing the filter elements.
  • the filter receptacle installation there is also the possibility for the filter receptacle installation to be disposed at an angular position in the range between 0° and 90°. A sliding incline could thus also be utilized for replacing the filter elements, so as to guide the filter elements from an upper position to a lower position on the filter receptacle installation.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Toxicology (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US17/282,151 2018-10-13 2019-10-08 Method and device for filtering contaminated air Active 2041-02-23 US11938438B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018008122.3A DE102018008122A1 (de) 2018-10-13 2018-10-13 Verfahren und Vorrichtung zur Filterung einer verunreinigten Luft
DE102018008122.3 2018-10-13
PCT/EP2019/077165 WO2020074479A1 (de) 2018-10-13 2019-10-08 Verfahren und vorrichtung zur filterung einer verunreinigten luft

Publications (2)

Publication Number Publication Date
US20210354068A1 US20210354068A1 (en) 2021-11-18
US11938438B2 true US11938438B2 (en) 2024-03-26

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US (1) US11938438B2 (de)
EP (1) EP3863749A1 (de)
DE (1) DE102018008122A1 (de)
WO (1) WO2020074479A1 (de)

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DE102020110081A1 (de) * 2020-04-09 2021-10-14 Lufttechnik Gransee GmbH Filtervorrichtung
CN111603879A (zh) * 2020-06-02 2020-09-01 张畅 一种自动更换滤具并排放滤液的环保用废气过滤辅助装置
CN111790217B (zh) * 2020-07-24 2021-04-02 中恒新材料科技(山东)有限责任公司 一种自动维护滤板的空气净化设备
CN112107935A (zh) * 2020-10-09 2020-12-22 福州隆鹃电子科技有限公司 一种方便更换滤板的空气污染检测并净化的装置
CN115531998A (zh) * 2022-09-27 2022-12-30 安徽华塑股份有限公司 一种电石炉尾气处理专用陶瓷纤维管
CN116036760B (zh) * 2023-04-06 2023-06-20 龙口市化工厂 一种化工生产设备
CN117160171B (zh) * 2023-10-08 2024-03-15 东海硅产(江苏)科技有限公司 一种高纯石英砂制备用空气循环过滤装置

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DE20011589U1 (de) 2000-07-03 2001-01-04 Leckel Sven Filterwechselvorrichtung für ein Filtergerät und Filtergerät mit einer solchen Filterwechselvorrichtung
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US20130068098A1 (en) 2011-09-15 2013-03-21 Lawrence Livermore National Security, Llc Radiological/biological/aerosol removal system
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CN107913551A (zh) 2016-10-05 2018-04-17 C&G科技有限公司 用于去除颗粒污染物或气体污染物的可交换吸附脱附装置

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Publication number Priority date Publication date Assignee Title
FR2390195A1 (fr) 1977-05-11 1978-12-08 American Air Filter Co Dispositif d'etancheite pour des elements de filtre
DE20011589U1 (de) 2000-07-03 2001-01-04 Leckel Sven Filterwechselvorrichtung für ein Filtergerät und Filtergerät mit einer solchen Filterwechselvorrichtung
KR100461437B1 (ko) * 2002-11-18 2004-12-10 현대자동차주식회사 차량용 에어필터의 자동교환장치
US20050150382A1 (en) 2004-01-08 2005-07-14 Sheehan Darren S. Filter system with automatic media refresh
US20130068098A1 (en) 2011-09-15 2013-03-21 Lawrence Livermore National Security, Llc Radiological/biological/aerosol removal system
US20150336042A1 (en) 2014-05-21 2015-11-26 Zeosys-Zeolithsysteme -Forschungs-Und Vertriebsunternehmen Für Umweltschutz Medizin-Und Filter system for a building and filter device
CN107913551A (zh) 2016-10-05 2018-04-17 C&G科技有限公司 用于去除颗粒污染物或气体污染物的可交换吸附脱附装置

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